* TheAbridgedSeries: ''Fanfic/CalvinAndHobbesTheAbridgedSeries'', though it has become an OldShame for its author and is now named "The Failed Series".
* AdaptationExpansion:
** "CALVIN FOR PRESIDENT!" is an adaption of one of the author's [[OldShame older fanfics.]]
* CrossDressingVoices: Pamela Segal as Calvin and Elizabeth Daily as Moe, for starters.
* DeletedScene: Calvin claims that "Two Loons and a Kid" had one involving a bus, [[NoodleIncident "but we don't have to go too far into that."]]
* MissingEpisode: "Eggs for Calvin!" was a DVD-only release before (presumably) coming to the network.
* SavedFromDevelopmentHell: Season 5 Part 1 fell into some pretty bad ScheduleSlip, but garfieldodie began to take over uploading stories in Part 2.
* ScheduleSlip: Between Season 3 and 4, mirroring the delay between the same seasons of ''WesternAnimation/SpongebobSquarepants''.
** Season 5 Part 1 slipped badly after "White Noise", with "Nocturnals" being uploaded bi-''yearly'' at one point, but after it was finished Creator/{{garfieldodie}} uploaded Part 2 and explained that real life got in the way, and that both the rest of Season 5 Part 2 and the rewritten version of ''Fanfic/CalvinAndHobbesIILostAtSea'' are in development.
* RealLifeWritesThePlot: A strange and very meta variation. It's mentioned that the reason the MTM eventually got a voice is because, if this was a real animated show, the hologram would be a pain in the butt to do, and would probably be eventually written out for that reason. Therefore, ''The Five Calvins'' wrecked the MTM's hologram software, forcing Calvin to make him voice-activated.
* WhatCouldHaveBeen: "Temporal Delay" was originally named [[Film/TerrorFromTheYear5000 "Terror from the Year 2011"]], then "2012", before adopting its current name for two reasons: the title would become dated very quickly no matter what year was chosen, and there's isn't really a "terror" in the plot of the episode.
** The Season 5 bonus chapter is ''filled'' with this. See [[Recap/CalvinAndHobbesTheSeriesUnusedIdeas this page]] for all the unused episode ideas.
* WordOfGod: The Season 5 bonus chapter provides us with a lot of this.
----